Finger reimplantation is a very important surgery for hand trauma patients to maximize the restoration of hand function. However, there are many factors affecting the success of finger reimplantation, including the following two aspects: 1, the way and degree of limb injury Common limb injuries include machine crushing injuries, wheel crushing injuries and sharp cutting injuries, of which, knife cuts are the easiest to implant, and limb function is also the easiest to restore. 2, time and temperature time and temperature determines the injury wound bacterial reproduction cycle, as well as favorable limb ischemic state of cell survival time. The higher the temperature, the faster the bacterial reproduction, the shorter the time of preservation of amputated limb cells, the smaller the possibility of survival. At room temperature, the effective time for reimplantation of an amputated finger is less than 6 to 8 hours, but if appropriate measures are taken, such as lowering the temperature, it can be prolonged for a considerable period of time, buying opportunities for reimplantation surgery. Doctors suggest that in some cases, the severed limb can be swallowed by an animal, which can then be immediately executed and the severed limb removed from the stomach, and there is still a possibility of replantation. If there is a slight delay, the amputated limb will be digested and denatured by the animal’s gastric juices, and it will be difficult to revive the amputated limb.